Comparison of different formulation and boundary conditions for computational aeroacoustics

L.D. De Santana, L.F. De Souza, O. De Almeida, F.J. De Souza

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Computational aeroacoustics is a relatively new research area. There are a lot of techniques to predict the noise generated aerodynamically. A currently approach, to simulate aerodynamic noise on the near field is the use of the full and Linearized Euler Equations (LEE). Both approaches present advantages and drawbacks. The present paper presents the computations of the propagation of a gaussian acoustic pulse and compares numerical solutions with the analytical solution applying different boundary conditions for the Linearized and full Euler equations. For the Linearized Euler Equations the Perfectly Matched Layer and radiation and outflow boundary conditions are evaluated. A different numerical formulation is used to discretize the full Euler equation which is characteristic-based. In this case, a conceptual model based on the characteristic analysis is used to specify boundary conditions through the use of an absorbing zone. Numerical results are discussed shedding light on advantages and drawbacks of each technique.
Original languageEnglish
Title of host publication46th AIAA Aerospace Sciences Meeting and Exhibit
DOIs
Publication statusPublished - 2008
Event46th AIAA Aerospace Sciences Meeting and Exhibit 2008 - Reno, United States
Duration: 7 Jan 200810 Jan 2008
Conference number: 46

Conference

Conference46th AIAA Aerospace Sciences Meeting and Exhibit 2008
CountryUnited States
CityReno
Period7/01/0810/01/08

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    De Santana, L. D., De Souza, L. F., De Almeida, O., & De Souza, F. J. (2008). Comparison of different formulation and boundary conditions for computational aeroacoustics. In 46th AIAA Aerospace Sciences Meeting and Exhibit https://doi.org/10.2514/6.2008-35